lua: add setValue() for menu forwarders

menu1:setSelected{id=<id>,value="text"}

src/gui/lua/lua_menue.cpp

@@ -76,6 +76,7 @@ void CLuaInstMenu::MenuRegister(lua_State *L)
 		{ "setActive", CLuaInstMenu::MenuSetActive },
 		{ "setName",   CLuaInstMenu::MenuSetName },
 		{ "setSelected",   CLuaInstMenu::MenuSetSelected },
+		{ "setValue",   CLuaInstMenu::MenuSetValue },
 		{ "__gc",      CLuaInstMenu::MenuDelete },
 		{ NULL, NULL }
 	};
@@ -590,3 +591,24 @@ int CLuaInstMenu::MenuSetSelected(lua_State *L)
 	D->m->setSelected(preselected);
 	return 0;
 }
+
+int CLuaInstMenu::MenuSetValue(lua_State *L)
+{
+	lua_assert(lua_istable(L, 2));
+	CLuaMenu *D = MenuCheck(L, 1);
+	if (!D) return 0;
+
+	lua_Integer id;		tableLookup(L, "item", id);
+	std::string value;	tableLookup(L, "value", value);
+
+	CMenuItem* item = NULL;
+	for (itemmap_iterator_t it = D->itemmap.begin(); it != D->itemmap.end(); ++it) {
+		if (it->first == id) {
+			item = it->second;
+			break;
+		}
+	}
+	if (item)
+		static_cast<CMenuForwarder*>(item)->setOption(value);
+	return 0;
+}

src/gui/lua/lua_menue.h

@@ -128,6 +128,7 @@ class CLuaInstMenu
 		static int MenuSetName(lua_State *L);
 		static int MenuDelete(lua_State *L);
 		static int MenuSetSelected(lua_State *L);
+		static int MenuSetValue(lua_State *L);
 };
 
 #endif //_LUAMENUE_H